66893361 has 16 divisors (see below), whose sum is σ = 95053824. Its totient is φ = 41747024.

The previous prime is 66893339. The next prime is 66893371. The reversal of 66893361 is 16339866.

It is not a de Polignac number, because 66893361 - 2¹⁹ = 66369073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66893371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7071 + ... + 13556.

It is an arithmetic number, because the mean of its divisors is an integer number (5940864).

Almost surely, 2^66893361 is an apocalyptic number.

It is an amenable number.

66893361 is a deficient number, since it is larger than the sum of its proper divisors (28160463).

66893361 is a wasteful number, since it uses less digits than its factorization.

66893361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20700.

The product of its digits is 139968, while the sum is 42.

The square root of 66893361 is about 8178.8361641495. The cubic root of 66893361 is about 405.9392133185.

The spelling of 66893361 in words is "sixty-six million, eight hundred ninety-three thousand, three hundred sixty-one".